Air driven diaphragm pump



FIG. 1 is a front elevational view of an air driven diaphragm pump showing my new design;

FIG. 2 is a side elevational view thereof, the opposite side being identical in appearance;

FIG. 3 is a rear elevational view thereof;

FIG. 4 is a top plan view thereof; and

FIG. 5 is a top perspective view thereof. 

The ornamental design for an air driven diaphragm pump, as shown and described. 